boostman
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    • boostman
      boostman replied to the thread No low speed fan.
      From a heat gun it looks like the low speed is coming on at 160, which is probably been set in the QH or BE. I'm not sure if it was a...
    • boostman
      boostman replied to the thread No low speed fan.
      I'll give it a test with the gun. The cap is new. I tested the coolant for exhaust gases and none was detected, so HG should be good...
    • boostman
      boostman replied to the thread No low speed fan.
      The engine was past M in NORM and once parked the overflow tank was boiling, so pretty sure it was almost an overheat situation.
    • boostman
      boostman replied to the thread No low speed fan.
      Had an almost overheat situation and noticed no fan was coming on. The ECU is set for 180 degrees and has a 180 degree thermostat.
    • boostman
      boostman replied to the thread No low speed fan.
      No A/C on this engine, so can rule that out ;). Wires/Connector look good. Was surprised how easy it was to disconnect, so potentially...
    • boostman
      boostman replied to the thread No low speed fan.
      Rerunning the KOEo test, I do see the fan spin momentarily then kick up to the high speed. Should I expect to see a full spin up at the...
    • boostman
      boostman replied to the thread No low speed fan.
      Both kick on when direct wired. So what else controls this?
    • boostman
      boostman posted the thread No low speed fan in Technical Forum.
      Anyone have a procedure to troubleshoot a no low speed fan condition? I have done the KOEo test and I see no movement of the radiator...
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